Re: [RFC] Constant Scalar Expressions (with constants)

Hi Lars, In what way is this ambiguous? I just tested; FOO never equals self::FOO. FOO always is a global constant, while self::FOO (and Klass::FOO) is the only way to refer to the class constant. const FOO = 2; class Klass { const FOO = 1; const BAR = FOO; // value two, global constant, and if FOO is not defined, Klass::Bar === "FOO". } Bob Am 7.11.2013 um 13:31 schrieb Lars Strojny <lars@strojny.net>: > Hi Bob, > > thanks for your work, it’s awesome. One thing about constants: > > Take this example: > > const FOO = 2; > > class Klass > { > const FOO = 1; > const BAR = FOO; > } > > Here FOO is ambiguous, as it could resolve to 2 or to 1. If I understood it correctly, global > constants are not yet implemented but I would suggest to always force prefixing the constant to get > rid of the ambiguity and allow for future extension. > > const FOO = 2; > > class Klass > { > const FOO = 1; > const BAR = self::FOO; > } > > Does that make sense? > > cu, > Lars > > On 07 Nov 2013, at 13:01, Bob Weinand <bobwei9@hotmail.com> wrote: > >> Hi! >> >> As you all know, Anthony Ferrara had withdrawn his RFC a few months ago, which was without >> support for constants in these expressions: >> >> const foo = 10; >> const bar = 10 * foo; >> >> The use of a constant in a declaration of a constant was not yet possible with his patch. >> >> That's what I changed. >> >> Enjoy reading the RFC at: >> >> https://wiki.php.net/rfc/const_scalar_exprs >> >> Bob Weinand >> >> Special thanks go to Dmitry who had helped me a lot with feedback and a deep review of the >> patch. >> -- >> PHP Internals - PHP Runtime Development Mailing List >> To unsubscribe, visit: http://www.php.net/unsub.php